16755 2.4 ghz, 13 dbd, directional antenna the 16755 is a high-gain (13 dbd), directional (yagi) antenna used with our rf416 spread spectrum radio, cr216 datalogger, or avw216 vibrating wire interface. This antenna has a narrow beam width, so precise aiming is mandatory. It is intended for longer distances, and for communicating to one other station (due to narrow beam width). specifications gain: 13 dbd frequency band supported: 2.4 ghz connector: type n female type: enclosed yagi (directional) with mounting hardware 16005 2.4 ghz, 0 dbd, omnidirectional antenna the 16005 is used with an rf416 spread spectrum radio, cr216 datalogger, or avw216 vibrating wire interface. This unity gain (0 dbd), 12 wave whip, omnidirectional antenna has an articulating knuckle joint that can be oriented vertically or at right angles. Its rpsma female connector attaches directly to the rf416, cr216, or avw216; no cable needed. The 16005 antenna must reside inside of a building or enclosure. specifications type: 12 wave whip, indoor antenna with right-angle knuckle joint frequency band supported: 2.4 ghz gain: 0 dbd connector: reverse polarity sma (rpsma) female